公开(公告)号：US3754029A

公开(公告)日：1973-08-21

申请号：US3754029D

申请日：1971-09-13

Applicant: HOECHST AG

Inventor： HOLTERMANN R ,  WIRTZ R ,  FREYER W ,  GSCHEIDMEIER M

IPC: C07C51/377 ,  C07C51/487 ,  C07C51/42

CPC classification number: C07C51/377 ,  C07C51/487 ,  C07C53/16

Abstract: DI- AND TRICHLOROACETIC ACID CONTAINED AS IMPURITTIES IN CRUDE MONOCHLOROACETIC ACID ARE PARRTIALLY DEHALOGENATEDD AND TRANSFORMED IN MONOCHLOROACETIC ACID AT A TEMPERATURE OF FROM 110 TO 145*C. IN A CONTINUOUS PROCESS IN THE PPRESENCE OF HYDROGEN WHILE TRICKLING THROUGH A CATALYST LAYER THE ACTIVE CONSTITUENT OF WHICH IS A NOBLE METAL OF SUBGROUP VIII OF THE PERIODIC TABLE.

公开(公告)号：IN138826B

公开(公告)日：1976-04-03

申请号：IN2529CA1973

申请日：1973-11-16

Applicant: HOECHST AG

Inventor： ENGELMANN M ,  HOLTERMANN R

IPC: C08F6/02 ,  C08F3/04 ,  C08F3/08 ,  C08F15/04

公开(公告)号：DK131131C

公开(公告)日：1975-11-03

申请号：DK59670

申请日：1970-02-06

Applicant: HOECHST AG

Inventor： JYRGEN-LOHMANN L ,  HOLTERMANN R

IPC: B01J4/02 ,  B01D11/02 ,  B01J6/00 ,  B01J8/00 ,  B01J19/00 ,  B01J4/00

Abstract: In the process for discharging solids treated with liquids from vertical columns, the treated solids are transported by means of a conveyor to a circulating auxiliary liquid with variable hydrostatic pressure and from there to the subsequent stage of treatment. By varying the hydrostatic pressure of the cycle of auxiliary liquid, the pressure conditions in the system can be adjusted in a manner to permit discharging from the column pure solid or solid with a defined amount of adhering liquid, or introducing defined amounts of liquid from the auxiliary cycle into the column in countercurrent flow with respect to the direction of flow of the solid.

公开(公告)号：DK131131B

公开(公告)日：1975-06-02

申请号：DK59670

申请日：1970-02-06

Applicant: HOECHST AG

Inventor： JYRGEN-LOHMANN L ,  HOLTERMANN R

IPC: B01J4/02 ,  B01D11/02 ,  B01J6/00 ,  B01J8/00 ,  B01J19/00 ,  B01J4/00

Abstract: In the process for discharging solids treated with liquids from vertical columns, the treated solids are transported by means of a conveyor to a circulating auxiliary liquid with variable hydrostatic pressure and from there to the subsequent stage of treatment. By varying the hydrostatic pressure of the cycle of auxiliary liquid, the pressure conditions in the system can be adjusted in a manner to permit discharging from the column pure solid or solid with a defined amount of adhering liquid, or introducing defined amounts of liquid from the auxiliary cycle into the column in countercurrent flow with respect to the direction of flow of the solid.

公开(公告)号：BR7016654D0

公开(公告)日：1973-04-12

申请号：BR21665470

申请日：1970-02-06

Applicant: HOECHST AG

Inventor： LOHMANN L ,  HOLTERMANN R

IPC: B01J4/02 ,  B01D11/02 ,  B01J6/00 ,  B01J8/00 ,  B01J19/00

Abstract: In the process for discharging solids treated with liquids from vertical columns, the treated solids are transported by means of a conveyor to a circulating auxiliary liquid with variable hydrostatic pressure and from there to the subsequent stage of treatment. By varying the hydrostatic pressure of the cycle of auxiliary liquid, the pressure conditions in the system can be adjusted in a manner to permit discharging from the column pure solid or solid with a defined amount of adhering liquid, or introducing defined amounts of liquid from the auxiliary cycle into the column in countercurrent flow with respect to the direction of flow of the solid.